Abstract. The OMPS Limb Profiler (LP) instrument is designed to provide high vertical resolution ozone and aerosol profiles from measurements of the scattered solar radiation in the 290–1000 nm spectral range. It collected its first Earth limb measurement on January 10, 2012 and continues to provide daily global measurements of ozone and aerosol profiles from the cloud top up to 60 km and 40 km respectively. The relatively high vertical and spatial sampling allow detection and tracking of sporadic events when aerosol particles are injected into the stratosphere, such as volcanic eruptions or PyroCb events. In this paper we discuss the newly released Version 2.0 OMPS multi-wavelength aerosol extinction coefficient retrieval algorithm. The algorithm now produces aerosol extinction profiles at 510, 600, 674, 745, 869, and 997 nm wavelengths. The OMPS LP Version 2.0 data products are compared to the SAGE III/ISS, OSIRIS and CALIPSO missions and shown to be of good quality and suitable for scientific studies. The comparison shows significant improvements in the OMPS LP retrieval performance in the Southern Hemisphere and at lower altitudes. These improvements arise from use of the longer wavelengths, in contrast with the V1.0 and V1.5 OMPS aerosol retrieval algorithms, which used radiances only at 675 nm and therefore had limited sensitivity in those regions. In particular, the extinction coefficients at 745, 869 and 997 nm are shown to be the most accurate, with relative accuracies and precisions close to 10 % and 15 % respectively, while the 675 nm relative accuracy and precision are on the order of 20 %. The 510 nm extinction coefficient is shown to have limited accuracy in SH and is only recommended for use between 20–24 km, and only in the Northern Hemisphere. The V2.0 retrieval algorithm has been applied to the complete set of OMPS LP measurements and the new data set is publicly available.

中文翻译：

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OMPS LP 2.0版多波长气溶胶消光系数检索算法

摘要。OMPS Limb Profiler（LP）仪器旨在通过测量290-1000 nm光谱范围内的散射太阳辐射来提供高垂直分辨率的臭氧和气溶胶剖面。它于2012年1月10日收集了其首次的地球肢体测量数据，并继续提供从云顶到60 km和40 km的臭氧和气溶胶剖面的每日全球测量值。当将气溶胶颗粒注入平流层时，相对较高的垂直和空间采样可以检测和跟踪偶发事件，例如火山喷发或PyroCb事件。在本文中，我们讨论了最新发布的2.0版OMPS多波长气溶胶消光系数检索算法。该算法现在在510、600、674、745、869和997 nm波长处产生气溶胶消光曲线。将OMPS LP版本2.0数据产品与SAGE III / ISS，OSIRIS和CALIPSO任务进行了比较，结果显示其质量很高，适合科学研究。比较结果表明，南半球和更低海拔的OMPS LP检索性能有了显着改善。与V1.0和V1.5 OMPS气溶胶提取算法相比，这些改进是由于使用了更长的波长而产生的，VOM和V1.5 OMPS气溶胶提取算法仅使用675 nm的辐射，因此在那些区域的灵敏度有限。特别是，在745、869和997 nm处的消光系数显示最为精确，相对准确度和精密度分别接近10％和15％，而675 nm的相对准确度和精密度约为20％。 。510 nm的消光系数在SH中显示精度有限，建议仅在20-24 km之间使用，并且仅在北半球使用。V2.0检索算法已应用于完整的OMPS LP测量集，并且新数据集可公开获得。